package com.gopay.common.util;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.alibaba.fastjson.serializer.JSONLibDataFormatSerializer;
import com.alibaba.fastjson.serializer.SerializeConfig;
import com.alibaba.fastjson.serializer.SerializerFeature;
import org.apache.commons.lang3.StringUtils;

import java.util.List;
import java.util.Map;

/**
 * JSON操作工具类
 * 
 * @FastJsonUtils.java
 * @author wangdong
 * @2016-8-29 上午10:28:11 www.gopay.com.cn Inc.All rights reserved.
 */
public class FastJsonUtil {
    private static final SerializeConfig config;

    static {
        config = new SerializeConfig();
        config.put(java.util.Date.class, new JSONLibDataFormatSerializer()); // 使用和json-lib兼容的日期输出格式
        config.put(java.sql.Date.class, new JSONLibDataFormatSerializer()); // 使用和json-lib兼容的日期输出格式
    }
//
//    private static final SerializerFeature[] features = {SerializerFeature.WriteMapNullValue, // 输出空置字段
//            SerializerFeature.WriteNullListAsEmpty, // list字段如果为null，输出为[]，而不是null
//            SerializerFeature.WriteNullNumberAsZero, // 数值字段如果为null，输出为0，而不是null
//            SerializerFeature.WriteNullBooleanAsFalse, // Boolean字段如果为null，输出为false，而不是null
//            SerializerFeature.WriteNullStringAsEmpty // 字符类型字段如果为null，输出为""，而不是null
//    };


    public static String toJSONString(Object object) {
        return JSON.toJSONString(object, config);
    }

    public static String toJSONNoFeatures(Object object) {
        return JSON.toJSONString(object, config);
    }



    public static Object toBean(String text) {
        return JSON.parse(text);
    }

    public static <T> T toBean(String text, Class<T> clazz) {
        return JSON.parseObject(text, clazz);
    }

    // 转换为数组
    public static <T> Object[] toArray(String text) {
        return toArray(text, null);
    }

    // 转换为数组
    public static <T> Object[] toArray(String text, Class<T> clazz) {
        return JSON.parseArray(text, clazz).toArray();
    }

    // 转换为List
    public static <T> List<T> toList(String text, Class<T> clazz) {
        return JSON.parseArray(text, clazz);
    }

    /**
     * 将string转化为序列化的json字符串
     * @param text
     * @return
     */
    public static Object textToJson(String text) {
        Object objectJson  = JSON.parse(text);
        return objectJson;
    }

    /**
     * json字符串转化为map
     * @param s
     * @return
     */
    public static Map stringToCollect(String s) {
        Map m = JSONObject.parseObject(s);
        return m;
    }

    /**
     * 将map转化为string
     * @param m
     * @return
     */
    public static String collectToString(Map m) {
        String s = JSONObject.toJSONString(m);
        return s;
    }

    /****************************************获取key 及 field*************************************************************/

    //key规则：dev1:solution:GNST:00700:TFEE
    public static String getKey(String param,String channel,String prodCode,String intTxnCd , String solutionType){
        return getUnionKey(param,channel,prodCode,intTxnCd,solutionType);
    }

    public static String getSolutionField(String acctId){
        return getSolutionField(acctId,null);
    }

    public static String getSolutionField(String acctId, String payChannel){
        return getUnionKey(acctId,payChannel);
    }

    private static String getUnionKey(String... fields) {
        StringBuffer strBuf = new StringBuffer();
        for (String field : fields) {
            if (StringUtils.isNotEmpty(field)){
                strBuf.append(field).append(":");
            }
        }
        String s = strBuf.toString();
        String substring = s.substring(0, s.lastIndexOf(":"));
        return substring;
    }
}
